Trimming for roofs



K. STIEF oct. 26, 1937.

TRIMMING FOR ROOFS Filed Sept. 8, 1934 p Patented Oct. 26, 1937 TRIMMING Fon RooFs Karl Stief, Russelsheim-on-the-Main, Germany,

assignor to General Motors Corporation, Detroit, Mich., a corporation of- Delaware Application September 8, 1934, Serial No. .743,1991/. In Germany October 23, 1933 3 Claims.

The invention relates to a lined metallic roof for motor vehicles. l

In the past a lining or inner covering for metal roofs of motor vehicles has been applied with difti;-

culty. Hi'therto it has usually been necessary to arrange special support beams or arched members on the sheet metal roof and to attach the inner covering to the roof in some way. -Where the roof construction required thev presence oi mroof arches, these arches have been used for the fastening of the inner covering. In such cases it has been possible to dispense with at least part of the auxiliary structures hitherto used for applying the inner covering, but it has never been possible to fasten the covering material in a simple manner. Moreover, the spacing between the metal roof andthe inner covering reduced the head room in the vehicle.

The object of the invention is to eliminate these objectionable characteristics and to provide in a simple way a metal roof with an inner covering in which no( space is lost to reduce the head room.

According to the invention, the metal vehicle 2 roof is formed without roof arches. To the inner side of the roof a layer of a sound-damping mass,

for example, cork, paper pulp, felt, rubber or the like, is applied by gluing or spraying, after which the covering material is secured or glued to the 30 insulating layer. The roof produced in this manner consists of three layers adhesively connected to each other, namely, an outer layer of sheet metal, an intermediate insulating layer, and an inner lining or covering. The insulating layer acts as a sound damper and prevents the transmission of heat.

At the edges of the roof there is usually a surroundingwooden moulding or frame for joining the roof with the sides oi the vehicle. 'I'he material of the inner roof covering may be attached to the mouldings either by gluing or by means of nails. 'I'he covering may, however, be glued at its edge directly tothe sheet metal of the roof or to the insulating layer. In this case it is recommended that a wooden moulding be used to cover the edge of the lining.

A roof formed in accordance with the invention offers the advantage of ease of manufacture, better utilization of space because of the elimination 5o of unnecessary spacing inside the vehicle, and

nally a very good appearance because the covering in all places adheres smoothlyand no unself be an adhesive mass` which will adhere when it is sprayed onthe sheetV metal of the roof and which at the same time will serve as anadhesive for attaching the inner roof covering. As suitable insulating substances, there may be used rubber solutions mixed with other comminuted or; powdered insulating substances, for example, a solution of a mixture of cork and rubber. It is .also within the scope of the invention to use rubber, and particularly crude rubber (latex) with 10 suiiicient adhesivepowerr g ,a

A constructional formoi the invention is shown by way of example vin the drawing:

Figure 1 is a side elevational view of a vehicle body with parts shown in section.

Figure 2 is a sectional view along line 2-2 of Figure 1. v

Figure 3 is an enlarged sectional view of the sectioned part at the left end of Figure 1 with the molding covering removed and shown in dotted lines better to illustrate the structure. 2o

The numeral I indicates a vvehicle body as a whole. The body has the usual doors 2 and 3 having the windows 4 and E. The rear window is indicated at 6,' while I designates the usual cowl, 25 and 8 the windshield. 'I'he rear wheel `housing is shown at 9.

The roof body is formed of a pressed metal sheet I0. Along the lateral edges of the roof the wooden side rail or moulding I 6 is arranged'and at the vehicle front this mounting merges into the transverse wooden header rail or moulding Il of somewhat different shape, and at the rear it merges into the transverse moulding I8. To the inside of the ro'of II! the insulating layer II is applied, for example, by gluing or spraying and to this layer II the inner roof lining or covering I2 adheres. As shown in Figures 2 and 3, the covering material I2 is'stuck fast in the vicinity of the wooden mouldings I6 and I1 only, while 40 the remaining part of the covering material is shown as unattached. r

At the roof sides (as shown inV Figure 2) the covering material has its edge attached to the insulation layer II. In order to cover the edge 45 and to make a neat appearance, there is used a covering moulding I3 which may be of veneer, cardboard, metal or any other suitable material. 'Ihis moulding I3 is coated with a substance Il or. covered with a fabric, or another material, to improve its appearance. If desired, the fabric may be glued to the moulding. The covering moulding itself is nailed to the roof rail I6 by means of nails I5 and has its upper edge in contact with the inner covering I2 and may rest 55 yieldingly against the same. The usual intermediate member i9 may be employed for covering the crack between the roof and the side oi the vehicle.

Referring to Figure 3, the edge of the inner roof covering is not attached to the insulating material Il, but to the roof edge moulding i1 by means of nails 20, in the manner indicated. The nails as well as the wooden moulding I1 are covered by the covering moulding Il which is nailed to the roof edge moulding Il by the nails 2|. The moulding i3' has a covering I 4' similar to the covering I4.

As shown in Figure 2, the roof edge moulding I6 has a rabbet 22 into which theroof edge is bent or formed as shown at 24.

In Figure 3, the roof edge 26 is bent to form a channel 28 which serves as one wall to support the windshield guide channel I0'. The roof edge 26 beyond the channel is inturned as at 32 and forms the bottom of the channel in which the windshield guide channel lll rests. A mietal moulding 34 is applied at the inside of the vehicle to form the other supporting wall for the guide channel 30.

At its rear end 38 the roof III may merge with the rear and side quarter panels Il and Il respectively.

'I'he best known art is French 680,158 Warschauer, 1,512,012 Becher, 1,664,114 Kelley.

I claim: I

1. A vehicle root comprising a metal sheet the interior surface of which is without substantial projections and extends substantially smoothly between the edge portions of the roof. a layer of plastic material adhering to the entire interior surface of said metal sheet between said edge portions of the roof, and an interior lining adhering to and underlying said layer, said layer constituting a sound-damping and heat-insulating means and said material including rubber in a form having sumcient adhesive properties to secure said layer to said metal sheet.

2. A vehicle roof comprising a metal sheet the interior surface of which is without substantial projections and extends substantially smoothly between the edge portions of the roof, a layer of plastic material adhering to the entire interior surface of said metal sheet between said edge portions oi' the roof, and an interior lining adhering to and underlying said layer, said material'consisting of rubber solution mixed with comminuted insulating substances and said layer constituting a sound-damping and heat-insulating means.

3. A vehicle roof comprising a metal sheet the interior surface of which is without substantial projections and extends substantially smoothly between the edge portions of the roof, a layer of plastic material adhering to' the entire interior surface of said metal sheet between said edge portions of the roof, and an interior lining adhering to and underlying said layer, said material including lrubber latex and said layer constituting a sound-damping and heat-insulating means.

KARL S'I'IEF. 

